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Metal-plated stainless steel material, and production method for metal-plated stainless steel material

A manufacturing method, stainless steel technology, applied in the direction of metal material coating process, superimposed layer plating, liquid chemical plating, etc., can solve the problems of metal plating layer peeling, etc., achieve excellent corrosion resistance and electrical conductivity, and improve coverage High efficiency and tightness, cost-effective effect

Active Publication Date: 2016-05-04
TOYO KOHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, when a metal plating layer is formed on the base nickel plating layer, if a defect such as a pinhole occurs in the metal plating layer, nickel is eluted from the base nickel plating layer, causing the metal plating layer to peel off.

Method used

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  • Metal-plated stainless steel material, and production method for metal-plated stainless steel material
  • Metal-plated stainless steel material, and production method for metal-plated stainless steel material
  • Metal-plated stainless steel material, and production method for metal-plated stainless steel material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] First, a stainless steel material (SUS316L) for forming the stainless steel sheet 10 is prepared. Next, the prepared stainless steel material was immersed in a sulfuric acid aqueous solution with a sulfuric acid concentration of 25% by volume at a temperature of 70° C. and an immersion time of 5 seconds to obtain a stainless steel plate 10 with a passivation film 11 formed on the surface.

[0103] Then for this stainless steel plate 10 that is formed with passivation film 11, according to above-mentioned method, carry out the mensuration of Cr / O value and Cr / Fe value and the mensuration of surface roughness, the result is as table 1 and image 3 , 4 shown. In addition, Table 1 also shows the results obtained by applying the above-mentioned formula (1) to the concentration x [volume %], temperature y [°C], and immersion time z [seconds] when stainless steel materials are immersed in sulfuric acid aqueous solution.

[0104] It should be noted, image 3 This is a graph ...

Embodiment 2～8

[0107] The concentration, temperature and immersion time when the stainless steel material is immersed in the sulfuric acid aqueous solution are as shown in Table 1, except that the stainless steel plate 10 is produced in the same manner as in Example 1, and the Cr / O value and Cr / Fe value are determined according to the above method. Determination, XRD analysis, XPS measurement, surface roughness measurement, section observation, electron beam diffraction pattern measurement. The results are shown in Table 1, Figure 2-7 shown.

[0108] It should be noted, figure 2 The results obtained by measuring the peaks of Fe2p, Ni2p, Cr2p, and O1s on the surface of the passivation film 11 formed on the stainless steel sheet 10 by XPS measurement are shown. here, figure 2 (A) shows the results obtained by measuring the peak of Fe2p, figure 2 (B) shows the result obtained by measuring the peak of Ni2p, figure 2 (C) represents the result obtained by measuring the peak of Cr2p, fi...

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Abstract

The invention provides a metal-plated stainless steel material and a production method for the metal-plated stainless steel material. The a metal-plated stainless steel material (100) is characterized by being provided with: a stainless steel plate (10) having, formed thereon, a passivation film (11) which has a Cr / O value in the range of 0.05-0.2, and a Cr / Fe value in the range of 0.5-0.8, said values being obtained by subjecting a surface of the passivation film (11) to Auger electron spectroscopy; and a metal-plating layer (20) formed upon the passivation film (11) on the stainless steel plate (10). The metal-plated stainless steel material (100) is further characterized in that the metal-plating layer (20) is configured from any one metal from among Ag, Pd, Pt, Rh, Ru, Cu, Sn, and Cr, or an alloy of these metals.

Description

technical field [0001] The present invention relates to metallized covered stainless steel materials and metallized covered stainless steel materials. Background technique [0002] In the past, as an electrical contact material used in connectors, switches, or printed wiring boards, the surface of stainless steel plates was covered with any one of Ag, Pd, Pt, Rh, Ru, Cu, Sn, and Cr. A metal-coated stainless steel material formed by a metal-plated layer composed of metals or alloys containing at least two or more of them. [0003] For such a metal-plated stainless steel material with a metal-plated layer formed on the surface, usually, in order to improve the adhesion of the metal-plated layer on the surface, before forming the metal-plated layer, base nickel plating is performed on a stainless steel sheet. base nickel plating. In this case, when a metal plating layer is formed on the base nickel plating layer, if defects such as pinholes occur in the metal plating layer, n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/00C23C18/42C23C22/50
CPCC23C18/42C23C22/50C23C28/322C23C28/34C23C18/1834C23C18/48B32B15/013B32B15/018C23C18/31C23C18/38C23C18/1827C25D3/46
Inventor 迎展彰吉田隆广
Owner TOYO KOHAN CO LTD
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